Optical Coherence Tomography News

Feature Of The Week: Deeply-Etched Optical MEMS Tunable Filter for Swept Laser Source Applications

Ain-Shams University and Si-Ware Systems reports on a wide tuning range MEMS-based swept laser source using deep reactive ion etching on an SoI substrate. A MEMS Fabry-Pérot filter with a free-spectral range and a tuning range wider than 94 nm is presented. The measured transmission loss of the filter is between -10.2 and -13.6 dB. This filter is used to construct a swept laser source with 85 nm tuning range. These results represent the widest tuning range reported in literature for an in-plane SoI-MEMS based swept laser source using deeply-etched free-standing distributed-Bragg-reflection mirrors. The recorded tuning range enables the use of the in-plane MEMS filter in optical coherence tomography applications.

For more information see recent Article. Courtesy Haitham Omran from the Ain Shams University. To share this article click Here.
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14. See all articles
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